<!doctype html> 
<html> 
<head> 
    <meta charset="utf-8"> 
    <title></title> 
</head>
<body>
<script type="text/javascript">


function a(x,y,z){

	//arguments[2] = 10;
	//alert(z);// 10 ? 3
	//alert(arguments[2])
	//alert(this);
//	this.style.background ='black';
};


//alert([].slice.call([1,2,3,4,5],2,4));
//[1,2,3].push(4)
//alert(.constructor)
//alert.call(window,213312);
//alert(23133)
//alert(alert.constructor)
//a.call(document.body,1,2,3);

//alert.call(window,123);


</script>
</body>
</html>